What Is Nqsq Virus?
Nqsq is a nasty ransomware infection, that belongs to the STOP/DJVU virus family. This malware aims to enter your computer and encrypt your files, adding the .nqsq file extension in the process. The main problem with this situation is that the Nqsq virus demands you to pay ransom to get your files back to normal again. This is particularly concerning as the criminals leave a ransom note, called _readme.txt asking to contact them in return for your files and even give a payment deadline.
Read this article to learn more about how Nqsq ransomware works and how to remove it and try restoring .nqsq virus files.
Nqsq Virus Summary
| Name | Nqsq, also known as UDS:Trojan.Win32.Chapak.gen, Ransom:Win32/StopCrypt.KM!MTB, Win32:PWSX-gen [Trj], Win32:PWSX-gen [Trj], A Variant Of Win32/GenKryptik.FHJB |
| File Extension | .Nqsq |
| Type | Ransomware, Cryptovirus |
| Short Description | The ransomware encrypts files on your computer system and demands a ransom to be paid to allegedly recover them. |
| Symptoms | The Nqsq Virus ransomware will encrypt your files by appending the .nqsq extension to them. |
| Ransom Demanding Note | _readme.txt |
| Distribution Method | Spam Emails, Email Attachments |
| Detection Tool |
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Nqsq Virus – What Is Known So Far
Nqsq virus is yet another iteration of the notorious STOP Ransomware viruses and the latest ones of this virus include .wiot, .tisc and .mppq ones.
The Nqsq virus may infect your computer system via one of the two following methods, which are often used by about 80% of ransomware viruses worldwide:
- If it is sent to you in the form of an e-mail attachment.
- If you have downloaded it from some shady site as an executable program.
If you have received an e-mail, containing the Nqsq virus as an attachment, then there is a strong chance these files could be one of the following fake documents, masked to be coming from some big company or organization:
- Work files.
- Invoices.
- Flight tickets.
- Receipts.
Not only this but also the Nqsq virus can infect you if you have visited some type of suspicious or low-reputation type of website and downloaded one of the following files you may have been looking for:
- Drivers.
- Portable executables.
- Keygens.
- Patches.
- Fake installers.
- Cracks.
When the Nqsq virus infects your computer it may connect to a remote server, from where this infection will secretly download the virus files onto one of the following system directories:
- %Local%
- %LocalLow%
- %AppData%
- %Temp%
- %SystemDrive%
Then, this ransomware may also set a _readme.txt ransom note so that you can see it. This note contains the extortionist message and may appear like the following:
The Nqsq virus uses the AES-256 cipher to lock the victim’s files. The ransomware could use an online or offline decryption key, it depends on whether it will be able to establish a connection with its command and control server (C&C server) at the beginning of the encryption process. In the event it doesn’t succeed to connect its C&C server, corrupted files could be decrypted by an offline decryption key. This, in turn, means that the free decryption tool released by Emsisoft may recover .nqsq files. You can find this tool in our article about DJVU/STOP ransomware.
In all other cases, the recovery of locked .nqsq files can happen with the help of the decryption tool owned by hackers. For this purpose, cybercriminals expect victims to contact them at manager@mailtemp.ch email address and ask for more details on how the ransom could be paid. As it becomes clear from their ransom message shown by the _readme.txt file, they promise a 50% discount off the regular price for the first 72 hours after the infection. Afterward, the price becomes $980. It should be probably paid in any cryptocurrency such as Bitcoin, Monero, Litecoin, etc.
Another impact the Nqsq variant of STOP ransomware could cause is the creation of entries in the Run and RunOnce sub-keys of Windows Registry Editor. Those sub-keys are located in the following directories and you should clear malicious entries added there in order to secure your infected PC:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
The outcome of this process is that virus files start running automatically each time you switch on the infected Windows system. Checking and finding these value entries may help you manually locate and delete the virus.
.nqsq Files
The Nqsq virus encrypts the following file types by running a scan of all the folders of your computer outside of Windows ones:
- Documents (.docx, .pptx, etc.).
- Audio files (.mp3, .wav, etc.).
- Archive file types (.zip, .rar, etc).
- Images (.jpg, .png, .etc).
- Videos (.mp4, .avi, etc.).
- Other.
After it encrypts your files, the virus ads the .nqsq file extension to them, making them appear like the following:
New Text Document.txt.nqsq
It is definitely advisable that you refrain from paying the ransom. Contacting hackers hides additional risks for your online security and privacy. The best working solution to restore lost data is by using available backups. If you don’t have any, you can consider the help of alternative data recovery methods. You can find a few of them in the removal guide that follows.
Remove Nqsq Virus and Try to Restore Files
To remove Nqsq ransomware from your computer system, we would strongly suggest that you follow the removal instructions we have created underneath this article. These steps are made with the main goal to best assist you to detect and delete this ransomware from your computer effectively. For the best removal experts recommend scanning for and deleting the Nqsq virus automatically by using anti-malware software.
Nqsq virus is the kind of software that has been created mainly to encrypt your files. It generates a unique key after decryption that may not always be available for free online in a decryptor software, published by cyber-security researchers. So if a STOP Decryptor software does not solve the problem with .nqsq files, you may try the alternative file recovery methods down below. They have been created with the idea to help you recover as many files as possible, but be advised that they are not a 100% solution to this ransomware.
Ventsislav Krastev
Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.
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Step 1: Scan for Nqsq with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall Nqsq and related malware from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:
Follow the instructions above and you will successfully delete most unwanted and malicious programs.
Step 3: Clean any registries, created by Nqsq on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by Nqsq there. This can happen by following the steps underneath:
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Step 4: Boot Your PC In Safe Mode to isolate and remove Nqsq
Step 5: Try to Restore Files Encrypted by Nqsq.
Method 1: Use STOP Decrypter by Emsisoft.
Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.
Follow the instructions below to use the Emsisoft decrypter and decrypt your files for free. You can download the Emsisoft decryption tool linked here and then follow the steps provided below:
1 Right-click on the decrypter and click on Run as Administrator as shown below:
2. Agree with the license terms:
3. Click on "Add Folder" and then add the folders where you want files decrypted as shown underneath:
4. Click on "Decrypt" and wait for your files to be decoded.
Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.
Method 2: Use data recovery software
Ransomware infections and Nqsq aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Nqsq-FAQ
What is Nqsq Ransomware?
Nqsq is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithms to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
What Does Nqsq Ransomware Do?
Ransomware in general is a malicious software that is designed to block access to your computer or files until a ransom is paid.
Ransomware viruses can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.
How Does Nqsq Infect?
Via several ways.Nqsq Ransomware infects computers by being sent via phishing emails, containing virus attachment. This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
Another way you may become a victim of Nqsq is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to Open .Nqsq files?
You can't without a decryptor. At this point, the .Nqsq files are encrypted. You can only open them once they are decrypted using a specific decryption key for the particular algorithm.
What to Do If a Decryptor Does Not Work?
Do not panic, and backup the files. If a decryptor did not decrypt your .Nqsq files successfully, then do not despair, because this virus is still new.
Can I Restore ".Nqsq" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Nqsq files.
These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How To Get Rid of Nqsq Virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.
It will scan for and locate Nqsq ransomware and then remove it without causing any additional harm to your important .Nqsq files.
Can I Report Ransomware to Authorities?
In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer.
Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:
Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:
Germany - Offizielles Portal der deutschen Polizei
United States - IC3 Internet Crime Complaint Centre
United Kingdom - Action Fraud Police
France - Ministère de l'Intérieur
Italy - Polizia Di Stato
Spain - Policía Nacional
Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Greece - Cyber Crime Unit (Hellenic Police)
India - Mumbai Police - CyberCrime Investigation Cell
Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
Can You Stop Ransomware from Encrypting Your Files?
Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.
Can Nqsq Ransomware Steal Your Data?
Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.
In many cases, the malware authors or attackers will threaten to delete the data or publish it online unless the ransom is paid.
Can Ransomware Infect WiFi?
Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.
Should I Pay Ransomware?
No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.
What Happens If I Don't Pay Ransom?
If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.
Can a Ransomware Attack Be Detected?
Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.
It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.
Do Ransomware Criminals Get Caught?
Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.
About the Nqsq Research
The content we publish on SensorsTechForum.com, this Nqsq how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.
How did we conduct the research on this ransomware?
Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.
Furthermore, the research behind the Nqsq ransomware threat is backed with VirusTotal and the NoMoreRansom project.
To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.
As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.
How to recognize trustworthy sources:
- Always check "About Us" web page.
- Profile of the content creator.
- Make sure that real people are behind the site and not fake names and profiles.
- Verify Facebook, LinkedIn and Twitter personal profiles.